<filename>lib/src/Cli.js<gh_stars>1-10
// $FlowFixMe
const yargs = require('yargs')

class Cli {
  args: any
  argv: any
  target: string
  command: string
  isScreenshot: boolean

  constructor (args: any = yargs) {
    this.args = args
    this._configure()
  }

  _configure () {
    this.argv = yargs
      .usage('Usage: gochu <command> [options]')
      .command('run', 'Generate gochu graph', yargs => {
        return yargs.usage('Usage: gochu run [options]')
          .example(`gochu run -s -t 'example/**/*.js`, 'Generate screenshot of graph')
          .example(`gochu run -t 'example/**/*.js'`, 'Generate and display graph on web client')
          .demandOption(['t'])
          .describe('t', 'Specify glob pattern in quotes')
          .alias('t', 'target')
          .nargs('t', 1)
          .describe('s', 'Generate screenshot instead of starting a web client')
          .alias('s', 'screenshot')
          .boolean('s')
      })
      .command('start', 'Start gochu web server', yars => {
        return yargs.usage('Usage: gochu start')
      })
      .command('stop', 'Stop gochu web server', yargs => {
        return yargs.usage('Usage: gochu stop')
      })
      .demand(1, 'Provide a valid command')
      .help('h')
      .alias('h', 'help')
      .argv
  }

  get target () {
    return this.argv.t
  }

  get isScreenshot () {
    return this.argv.s
  }

  get isStop () {
    return this.argv._[0] === 'stop'
  }

  get isStart () {
    return this.argv._[0] === 'start'
  }
}

module.exports = Cli
